Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Occurrence and damage of the fall armyworm Spodoptera frugiperda (Smith) at different growth stages of corn.

Abstract

The occurrence and damage dynamics of the fall armyworm Spodoptera frugiperda (Smith) on corn were investigated in Zhanjiang and Jiangmen, Guangdong in 2019, and the occurrence and damage regularity of the armyworm in different growth stages were analyzed. It was found that the armyworm density and damage degree to corn at different regions was different, showing imbalance. The damage to corn seedling stage of the armyworm was the most serious, followed by the big-bell-mouth stage. The linear regression models between the damage rate of corn and the pest density at six corn growth stages in two regions were established. The results provided the reference for monitoring, warning and control of the armyworm.